Correspondence, reports, documents, handwritten notes related to the meetings, activities and membership of the Executive Bureau
Letter by Bachmann, Swiss group of Photogrammetric European Organization, to Knorr, OEEPE President, discussing the modes and process of Swiss reaccessions to the OEEPE, 29/01/1971, and related answer
Letter by G. Laclavere, Director of French National Geographical Institute, to Colonel Tonglet, Director general of Belgian Geographical Military Institute, explaining the reasons behind French non–accession to OEEPE, 29/10/1971
Proposal for changing the mechanism defining OEEPE research policy, 19/02/1972
Letter EC/114/13 (1-3-4) by Guy B. Gresford, UN Director for Science and Technology, asking for comments on new ways of promoting scientific cooperation between developed and developing countries

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